The embodiments described herein generally relate to a method and system for synchronizing multiple classes with disparate schemas in a single collection through the use of the same synchronization request and/or synchronization key. A collection of different types of items may be synchronized while using the unique schema for each class. Further, different synchronization options, e.g., filtering, truncation, and body settings, may be applied to each class. In a synchronization request, an option block within a synchronization command notifies the server to synchronize the class specified in the option block. The option block may also specify the options, or settings, if any, to apply to the class. Multiple option blocks may be included in the synchronization command to specify the synchronization of multiple classes. Where multiple classes are specified, the server responds with the synchronized items of all such classes while maintaining each class's unique schema.